Here is the download link to the installer EXE for the evaluation version:
http://source.ibobjects.com/IBO_4_3_eval.zip

The file is about 4 MB in size and includes the eval for Delphi 4, 5, 6 and
7. It's an installer compiled by Inno Setup. It consists of mostly sources
that are common to all and then some critical DCU files compiled for each.

I will most likely create separate installs for each version of Delphi to
reduce the download size.

Thanks for all feedback people have!

Jason Wharton
www.ibobjects.com